Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2023 5 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2023   11:33:56   (   0.08,-147.09) (  -0.91,-142.81)  488.24                80
 05/14/2023   23:59:07   (  -0.05,-147.77) (  -0.15,-148.26)   55.74                80
 05/17/2023   12:03:07   (   0.04,-148.93) (   0.10,-149.23)   34.20                80
 05/20/2023   00:06:47   (  -0.02,-150.04) (  -0.07,-150.24)   22.57                51
 05/22/2023   12:11:16   (   0.00,-151.18) (   0.01,-151.21)    3.42                80
 05/25/2023   00:12:44   (   0.00,-152.27) (   0.00,-152.21)    6.54                80